Cartridge-fuse.



A. F. DAUM.

CARTRIDGE FUSE. APPLIOIATION'FILED'MAR. 5, 1910.

' 961,716. Patented June 14,1910.

INVENTOR I A.F.DAU

, ATTORNEYS UNITED STATES-I PATENT OFF-10133.7

ALBERT F. DAUM. OF PITTSBURG, PENNSYLVANIA.

CARTRIDGE-FUSE.

To all :whom it may concern.

Be t known that LAnennr F. DAUM, a

citizen of theUnited States of America, re-

siding at X. S. Pittsburg, in the countv of kllegheny and State of Pennsylvania, have invented certain new. and useful Improve ments in Cartridge-F uses, of which the following is a specification, reference being bad therein to the accompanying drawing.

, This invention relates to -cartridge fuses, and the ob ects of my invention are to furnish a fuse cartridge with detachable end capsthat can be easily removed to permitof new fuses being placed in the cartridge;

and to provide a cartridge fuse that can be easlly repaired particularly when the fuse 1S burned out, without discardingany part of the cartridge fuse.

Other objects of my invention are to provide a cartridge fuse that canbe used in} connection with a blade contact, binding post or other contacts used in connection with electrical devices, to provide a cartridge fuse with fuses that can be replaced without the use of tools, and to assemble the various parts of the fuse in, such a manner that they can be easily and quickly renewed.

Further objects of my inventionare to furnish a cartridge fuse with simple and e ffective means for holding-the fuses whereby they can expand and contract without bre in or disarran in an ar 2 fuse and to-accomplish the above results by, a fusethat is simple in construction, durable and equally disposed around said slots.

edge ofthe Washer bordering upon the slit .16. is bent out of the planewith respect to inexpensive to manufacture. d

- These and such other objects as may hereinafter appear are attained by a mechanical construction .that will be hereinafterspecifically described and then claimed.

- Reference will now be had to the drawing forming a part of this specification,

where1n:-

Figure 1 is an elevation of a cartridge fuse constructed in accordance with my in vention, Fig. 2- is a longitudinal sectional view of the same, Fig. 3 is a cross sectional View of the fuse taken on the line'XX of Fig. 1, Fig. 4 is a'similar view taken on the line "W W of Fig. 1, Fig; 5 is an end view of the cartridge fuse, Fig. 6 is a perspective Specification ofLe tters Patent. Patented J 11119 14, 1910, Application filed March 5,1910. Serial No. 547,577. I I I conducting material and having the ends; thereof exteriorly screw threaded, as at 2,

toreceive caps 3 and 4, said caps having the walls thereof threaded to screw upon the .ends of the shell ,1. The-cap 3 is. provided w-ith'a blade 5, whereby the: cartridge fuse can be used in connection .with a knife switch or. a blade contact 'and furthermore. the

caps are providedwith a plurality of circumferentially arranged vents 6, to allow" gaseous fumes 'or other matter to escape from'the shell when the fuses are burned out.

In the shell-1 is located a non-combustible and insulation material 7, as soapstone, chalk, asbestos, etc and extending through the material 7 area 'plura-lityof fuses 8 and 9 made of soft lead or a'similar material.-

These fuses are of a greater length than the shell 1 and thefuse 9 is preferably in the form of a ribbon, and the ends thereof are provided with heads 10 adapted to'be soldered or otherwise mounted. upon the fuse 9. In sonieinstances, the heads 10 can be formed integral-with the ends of the fuses and the heads bent to lock the fuse in 13 provided with a slot 14 and openings 15, I

.ne slot 14 forming the inner end ofv the slit ,16 of said washer. The washers 13 are made of light and durable metal with the slots 14:

centrally thereof and the openings 15' The through the openings 15 and be bent against the washers, at 17, and these fuses are used where the current is of small capacity,

and when the current is increased, the'rib-- bonfuse 9 is used, this fuse -being placed in position by-sliding' the washers into engagement with the headed ends thereof, the slit 16 of said washers being of a suflic ent width to allow the ends of the ribbon to .enter the slots 14 of the washers.

The resilient washers13 are adapted tq be held in engagement with the ends of the shell 1 by the caps 3 and t engaging the ends of the fuses 8.or .9, and the resiliency n the washers is adapted to normally maintain and contact between the ends of the fuses and the cap 4, irrespective of any expansion and contraction upon the'part of said cap.,

In Fig. 7 of the drawing, I have illustrated a modified form of cap, the cap having one edge thereof provided with a bifurcated extension 15 which permits of a cartridge fuse equipped with the caps being held between the binding posts or contacts.

Having now described my invention what I claim as new, is

In a cartridge fuse, the combinationwit-h a shell of non-conductive material, insulation filling the shell, resilient washers fitted against the ends of said shell and provided with openings, each washer being provided with a radial slit with a portion ofeach :washer bent out of the plane of the remaining portion of the washer, a plurality of fuses extending through the insulation material in the shell, some of said fuses having the ends thereof 'extendi through the openings of said washers aiid bent to enanother fuse extending through the filling of said shell, heads carried by the ends of said fuse,

and end caps threaded on the ends of said shell to engage t-heends of said fuses, and slitted washers compensating for the expansion and contraction of said fuses and said caps and adapted to normally maintain the ends of said. fuses in en ment with said caps, substantially as des ifii ed.

In testimony whereof I affix my signature in the presence of two witnesses.

. ALBERT F. DAUM. Witnesses:

. Kim, H. Bi'rmtu.

livi A. Muse. 

